Mold Mite (or Grain Mite)
Scientific Name: Tyrophagus putrescentiae
Order & Family: Sarcoptiformes: Acaridae
Size: 0.3–0.5 mm (nearly microscopic, appearing as tiny white moving specks)
Natural Habitat
High-humidity indoor environments, damp wood, stored grains, and areas with mold growth
Diet & Feeding
Fungi, mold, yeasts, and organic matter high in fat and protein like grain or cheese
Behavior Patterns
Rapid reproduction in humid conditions; they move slowly across surfaces looking like walking dust
Risks & Benefits
Non-biting, but can cause mild skin irritation (grocer's itch) or allergic reactions if inhaled in large numbers
Identified on: 3/5/2026